CTJLEX DUPLICATOR 235 



CULEX DUPLICATOR Dyar & Knab. 

 Culex duplicator Dyar & Knab, Smiths. Misc. Colls., quart. Iss., lii, 258, 1909. 

 Okiqinal Desckiption or CuuEX dtjplicatob: 



Proboscis uniform, black-scaled with a broad white ring at the middle. Abdomen 

 black above, with rather narrow white basal segmental bands, some of them slightly 

 produced in the middle. Legs black, femora and tibise white-lined on the outer side, 

 the tarsal Joints broadly white-ringed at base and apex. Wing-scales narrow, those 

 on the forks of the second vein moderately long, narrowly lanceolate. 



Five specimens, San Francisco Mountains, Santo Domingo (A. Busck). 



Type no. 121H, U. S. N. M. 



Description of Female and Male of Cttlex dtjplicatob (Labva Unknown) : 



Female. — Proboscis moderate, subeylindrical, xmiforin, labellse eonically 

 tapered; vestiture black, a sharply limited white band near the middle; setse 

 minnte, curved, black, those on labellas more prominently outstanding. Palpi 

 small, one-sixth the length of proboscis, black, with small white tips. Antennae 

 with the joints subequal, rugose, pilose, black, the second joint slightly enlarged ; 

 tori subspherical, with a cup-shaped apical excavation, yellowish, shading to 

 black within; hairs of whorls sparse, moderate, black. Clypeus rounded tri- 

 angular, prominent, brown, nude. Byes black. Occiput black, clothed with 

 narrow curved scales, pale shining brown, margin of eyes white; many erect 

 forked black ones forming a patch on each side, the cheeks with broad white 

 scales ; a row of bristles along margin of eyes. 



Prothoracic lobes elliptical, remote dorsally, pale brown, clothed with narrow, 

 curved white scales and pale bristles. Mesonotum brown, clothed with narrow, 

 curved golden-brown scales, paler along margins of disk and about the ante- 

 scutellar space; bristles rather numerous, pale brown. Scutellum trilobate, 

 clothed with narrow, curved pale scales, each lobe with a tuft of brown bristles. 

 Postnotum elliptical, prominent, pale brown, nude. Pleurse and coxse pale 

 brown, with small patdies of elliptical, flat white scales and rows of small pale 

 bristles. 



Abdomen subeylindrical, depressed, truncated posteriorly; dorsal vestiture 

 black, a yellowish-white band at base of each segment except the first, widening 

 at side into a row of white lateral patches; venter yellowish white, each seg- 

 ment with a black mark on the posterior border. 



Wings ample, hyaline ; petiole of second marginal cell one-third as long as its 

 cell, that of second posterior cell shorter than its cell ; basal cross-vein more than 

 its own length distant from anterior cross-vein ; scales brown, black on the eosta, 

 the outstanding ones lijjear, those on second to fourth veins apically dense and 

 narrowly lanceolate. Halteres whitish with dark knobs. 



Legs moderate ; femora black, the tips white, white beneath ; tibiae black, with 

 a narrow pale line on each side reaching nearly to apex, tips white ; tarsi black, 

 each joint with a white band at base and tip, first tarsal joint very narrowly 

 white-lined within; front tarsi with the first to third joints only narrowly 

 ringed ; mid tarsi like the front ones. Claw formula, 0.0-0.0-0.0. 



Length : Body about 3.5 mm. ; wing 3 mm. 



Male. — Proboscis longer and slenderer than in the female, straight, gradually 

 enlarged towards apex, the white ring at the middle narrow. Palpi exceeding 

 the proboscis by about the length of the last joint, the penultimate one slightly 

 enlarged; vestiture black, the long joint with a pale ring at basal third and one 

 at apical third ; last two joints white-marked at base ; outer half of the long joint 

 and the last two joints with long, dense black hairs. Antennae plumose ; last two 

 joints long and slender, rugose, pilose, black, the others short, pale, each with a 

 narrow black ring at insertion of the hair-whorl ; hairs long, fine, black. Color- 

 ation similar to the female. Wings narrower than in the female, the stems of 



